Critical Cooling Rate for the Glass Formation of Fe80-xCoxP13C7 Alloy

摘要：

　　In this work,the critical cooling rate Rc for glass formation of a series of Fe80-xCoxP13C7 (x = 0,5,10,15,20 at.%) alloys was determined by means of constructing CCT curves using Uhlmann’s method.The calculated critical cooling rates for x = 0,5,10,15,20 at.% are 621,441,548,894,922 K/s,respectively.These results well coincide with the maximum diameters of Fe80-xCoxP13C7 amorphous alloys determined by experiments varying with the content of Co.The calculated Rc was also on the reasonable order of magnitudes.In addition,the values of three common GFA criterions of Trg,ΔTx and γ were calculated according to the thermodynamic data determined from DSC and DTA curves of Fe80-xCoxP13C7 (x = 0,5,10,15,20 at.%) bulk amorphous alloy.The validity of these GFA criterions in the series of Fe80-xCoxP13C7 (x = 0,5,10,15,20 at.%) alloys were investigated and it was pointed out that these three GFA criterions were not able to explain the experimental results of the maximum diameters of Fe80-xCoxP13C7 amorphous alloys varying with the content x of Co.

关键词： Critical cooling rate Fe-Co-P-C Bulk metallic glasses Glass forming ability

作者: Kai Xu Yan Wang Qiang Li

作者单位: School of Physics Science and Technology, Xinjiang University, Urumqi, Xinjiang 830046,China

会议类型: 国际会议

会议名称: the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))

会议地点: 太原

会议语种:英文

页码: 799-808

在线出版日期: 2012-07-13（万方平台首次上网日期，不代表论文的发表时间）